donny

which gauge is more important between oil temp and oil pressure if you were going to get one of them?? I am going to buy boost and water temp for sure..

Snook

iTrader: (12)

oil pressure

the oil temp should be reflected a little through the water temp

bad oil pressure = blown motor
bad oil temp = nothing much really

adam c

iTrader: (2)

Since you alreeady have an oil pressure gauge, I would choose the temp gauge.

scratchjunkie

i vote oil pressure as well, but i think water and boost is enough.

donny

I heard if your oil temp is high from sitting in traffic and then hammer it, that is bad.
I guess when the oil temp is high it doesnt protect the motor as well.
I know the stock gauge reads pressure, but I wouldnt trust that gauge. It seems to always read almost no pressure when at idle.

Shinobi-X

Also places more stress on the water cooling system.

rynberg

I was in your same predicament. I went with an oil temp gauge. For the most part, it does have a linear relationship to the water temps, but not always. It's nice to have for running on the track.

I find the stock oil pressure gauge to be fine (how many things can you really look at anyway?). It often reads low at idle but appears to work fine once underway. Seriously though, it works well enough to tell if you are getting oil pressure or not.

donny

rynberg,
do you like your Defi gauges?
I am looking at getting the tri-pod as well, but I am going to get the 3 60mm pod or the 1 60mm and 2 52mm pod.
Is it still easy to read the boost gauge mounted in the center speaker location? It seems like it may be a bit far away compared to the pillar mount, which is what I had on my last 3rd gen.

Mahjik

iTrader: (1)

If you are reading 0 oil pressure when the car is running (even idling), that means there a problem with the oil sending unit (not the gauge itself).

Due to it's location, it gets pretty dirty and has a tendancy to fail. You can try cleaning up the contacts and see if that helps with your reading.

donny

my stock oil pressure gauge does read pressure at idle, the needle is just at the bottom 1/3 of the gauge sweep.

Mahjik

iTrader: (1)

So it's not zero, but close to it? Either way, it's not reading correctly. I can't remember exacly, but you should be around 30 at idle. It not, the sending unit is either dirty or failing (or you have a problem under the hood on your hands if it's reading correctly).

RX-7racer88

I would say go with the pressure one. I don't think the oil temp is really nessecay unless your out at the track alot with it. I just have the boost and water temp. gauge.

911GT2

Just to have another opinion, mine reads just about 30 at idle, and jumps to 60 as soon as I start moving. It hovers around 60, increasing a little when under boost, decreasing when cruising.

DaedelGT

911, your's doesn't fluctuate with RPM? I think it is supposed to... I usually stay at the 60 line at 3000 RPM, but at around redline I'll get upwards of the 120 line. When starting the car the pressure is usually really high as well, which I assume is from the viscosity of the cold oil. I definately read right at 30 on idle.

GoodfellaFD3S

iTrader: (213)

None of the above

I choose EGT

crazysuprakid

Why waste time with the EGT, when you can get

rynberg

IMO, it's easier to read gauges mounted in the center speaker pod than on the a-pillar. I think it's actually harder for most people to look to their left rather than a quick glance down from the center of your lane. I gaurantee you will be happy with the viewing. I am also running 52mm gauges and they are big enough. The one negative to the center-speaker pod is a slight bit of parallax at some points on the middle and right pods. It's slight and would be less noticeable with the seat further back (I'm only 5'6" with short legs, so I have the seat pretty far up... ).

DaedelGT

What do you guys think of these guages? Zerobanger introduced them to me.

http://www.nordskogperformance.net/streetdig2.html

Mahjik

iTrader: (1)

A few other members have them (or ones very similar). The only problem I see is that their boost gauges apparently don't read vacuum (which in most cases for us is just as important as the boost reading).

DaedelGT

Ahh, I hadn't thought of that :forheadslap:. Do any of the "digital" guages read vacuum?

ZeroBanger

I just bought 3 gauges, water temp, air temp and boost pressure.

EDIT: Haha...I see I've been outed already. The digital boost gauge does not read vaccum, but if I need to see that i'll check my power FC. I just installed it last night, I found that you have to ground the sender really good to get an accurate reading, though.

I found that with my old autometer I could get an estimate, but never an exact reading. its too hard to tell from 11 lbs and 12 or 12 and 13, etc. The digital leaves no doubt in my mind. The analog boost gauge is better for diagnosing problems, so if anyone gets the digital boost gauge, I recommend keeping the analog gauge so you can hook up later if you need to diagnose.


BTW, these gauges have a lifetime warranty and really good technical support. They cyberdyne gauges were cheaper (about 1/2 as much), but I liked these better.

DamonB

Oil pressure is directly related to RPM, not boost. Since the oil pump is driven off the e-shaft it only makes sense that the faster the e-shaft spins the more oil pressure you make.